Spring-bed.



.Nog 726,113.' PATENTED APR. 21.1903.

J. H. THOMAS.. SPRING BBD.

APLIoATIon FILED nov. 26. 1902.

'n' xoom.. v

.a W/////////////// .X\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\y/ WITNESSES INVENTQR UNITED j STATES PATENT OFFICE.

JOHN H. THOMAS, OF CLARKE COUNTY, WASHINGTON.

SPRING-BED.

SPECIFICATION forming part of Letters Patent No. '726,1 lfdated April 21, 1903. Application filed November 26, 1902. Serial No, 1321931. (No model.)

To @ZZ whom, it may concern:

Be it known that LJOHN H.QTHO1\AS, a citizen of the United States of`America, residing in the county of Clarke. and Stateof Washington, have invent-edicertain new and useful Improvements in lSpring-Beds, of which the following is a full, clear, andexact specification.

This invention has special reference to the construction whereby a flexible mattress is kept taut and adjusted to compensate` for Vslackening under use; and it consists in certain novel features hereinafter described and claimed.

In the annexed drawings, whichfully illustrate my invention, Figure vl is aside eleva- Fig. 2 is a detail sectional View takenonjthe line on of Fig. l. Fig. 3 is a detail sectional view taken on the line y y of Fig. 2; and "Figs is a detail perspective View showing the roller, the riser, and the clamping-bar separated, butin their proper relative positions;

The bedstead-frame A is of the usual or i any preferred construction, having the side rails-B, as shown. On these side rai-ls, at, the

ends of the same, I secure the risers C, having.4

Lat the opposite corners of the bed. z Between.V

' the risers ofk each pair I. arrange a rwollerorf cylindrical tube F, to which thewire or 'other spring fabric G is secured.- When the fabricv is stretched lbetween the-roll4ers, it formsiar.

flexible mattress of e suiiicient weight .to ysup-fv port the sleeper in a comfortable position. The fabric is secured to the rollers by means of clamping-bars H, which are .curved concentrically with the rollers `and are secured thereto over the, fabricfby bolts LI, inserted through Vthe saidv bars and the rollers. .The ends of the bars project beyondthefends of the rollers 'and engage the notches Din the risers, 'so as to prevent the backward rotation of the rollers under the tension of the fabric, as will be readily understood. The end bolts I pass through the ends of eyebolts J, which are fitted in the openings E of the risers and project into the rollers, as shown most clearly in Fig. 2. On the outer ends of these eyebolts are fitted nuts K, which are adapted to be turned home'i'against the risers, and on their inner portions are collars or sleeves L, fitting tightly en the eyebolts and within the risers to support Y*the rollers in position, the risers being forced against the ends of the roller, so as to clamp the same by the nuts K.

Frolnfthe foregoing description, takenl in connection with the accompanying drawings, it will be seen that I have-provided a very simple and efficient spring-bed. Should it be desired to tighten the fabric, so as to take up the slack or stretch caused by long-continued use, the clamping-bars are removed andv the fabric then drawn tight over the roller, after which the clamping-bars are returned and secured. j

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1 -:In a spring-bed, the combination with the frame, of risers secured at the corners of the same and provided with notches in their outer', edges, rollers mounted between the risers, afabric stretched over the rollers, and

lclamping-bars secured on the rollers over the fabric y'and having their ends projected be-v 'yond the rollers to engage the notches inthe risers.

2. In a spriug-bed,.the combination with the frameand risers thereon, of rollers mounted between the risers, a fabric stretched over the rollers, clamping-bars secured on the rollers over the fabric and adapted to engage the risers, eyebolts inserted through the risers and projecting into the ends of the rollers,land bolts inserted through the clamping-bars and the rollers to secure the same together, the end ones of said bolts passing through the said eyebolts.

In testimony whereof- I have signed this specification in thepresence 'of'two'sub'scribing Witnesses. A ,v

j JOHN I-I. THOMAS.

Witnesses HUGH MACMASTER, ALLAN DUEEIN. 

